Cytochrome c oxidase (2occ) oxidized

Cytochrome c oxidase (1ocr) reduced

• Push the button  to observe one functional unit along with the metal and redox centers:

Cu_A, Na⁺, Mg²⁺, hem a, hem a₃, Cu_B, Zn²⁺

• Push the button  to observe the following residues within 3.0 Å of the Cu_A center:

Cys196, Cys200, Glu198, His161, His204, Met207

• Push the button  to observe the following residues within 3.0 Å of the hem a center:

Arg38, Arg439, His61, His378, Ser382, Trp126, Tyr54

• Push the button  to observe the following residues within 3.0 Å of the hem a₃-Cu_B site:

Asp364, Arg438, His240, His290, His291, His376, Trp126, Tyr244, and one peroxide ligand

• Push the button  to observe the following residues within 3.0 Å of the Zn²⁺ center:

Cys60, Cys62, Cys82, Cys85

• Push the button  to observe one functional unit along with the metal and redox centers:

Cu_A, Na⁺, Mg²⁺, hem a, hem a₃, Cu_B, Zn²⁺

• Push the button  to observe the following residues within 3.0 Å of the Cu_A center:

Cys196, Cys200, Glu198, His161, His204, Met207

• Push the button  to observe the following residues near the hem a center:

Arg38, Arg439, His61, His378, Ser382, Trp126, Tyr54

• Push the button  to observe the following residues near the hem a₃-Cu_B site:

Asp364, Arg438, His240, His290, His291, His376, Trp126, Tyr244

• Push the button  to observe the following residues within 3.0 Å of the Zn²⁺ center:

Cys60, Cys62, Cys82, Cys85